MGS Loc. 89a - Wadell Cave [Mint Spring Fm] (Oligocene of the United States)

Where: Smith County, Mississippi (32.0° N, 89.5° W: paleocoordinates 32.3° N, 83.0° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Mint Spring Formation, Rupelian (33.9 - 28.1 Ma)

• The Mint Spring Formation grades upward into the more calcareous sediments of the Marianna Limestone. Above the Mint Spring - Marianna contact, aragonitic shells generally have been leached leaving only the molds. The Marianna Limestone is only about two feet thick at Vicksburg, Mississippi and thickens eastward to forty-seven feet in Wayne County. In the latter area it is a soft limestone (lime mudstone and wackestone) with hard ledges in the lower part. In central and eastern Mississippi, it contains significant beds of calcareous sand. The Mint Spring- Marianna transgressive sequence began with the subsidence of Forest Hill delta systems. As the northern Gulf waters transgressed inland over the delta plain and estuarine enviroments, the Mint Spring Formation was deposited as a destructional shelf sand in the near-shore environments. Carbonates of the Marianna Limestone were deposited above this sand in the deeper waters of an offshore carbonate shelf.

• formation-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, sandy, calcareous lime mudstone and wackestone

Size class: mesofossils

Preservation: replaced with calcite

Collection methods: bulk, mechanical,

• bivalves only

Primary reference: D. T. Dockery. 1982. Lower Oligocene Bivalvia of the Vicksburg Group in Mississippi. Mississippi Department of Natural Resources Bureau of Geology 123:1-261 [L. Ivany/S. DeLong/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5867: authorized by Linda Ivany, entered by Sarah DeLong on 09.12.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• list uses catagories. R=rare, 1-9 valves collected. C=common, 10-99 valves collected. A=abundant, 100+ valves collected. Categories are listed in the comments field, absolute abundances are given in the abundance field.

•Since taxa with greater than 99 specimens were not counted with absolute abundances, these were reported with category "A" for abundant.

 Dentaliida - Dentaliidae
Dentalium varicostata n. sp. tusk shell
 Gadilida - Gadilidae
 Carditida - Cardiniidae
Tellidorella interlacinia n. sp. Dockery 1982 clam
R category
 Carditida - Astartidae
Astarte menthifontis n. sp. Dockery 1982 clam
C category
 Carditida - Carditidae
"Venericardia carsonensis" = Venericardia (Rotundicardia) carsonensis
"Venericardia carsonensis" = Venericardia (Rotundicardia) carsonensis Dall 1903 clam
R category
 Carditida - Crassatellidae
Crassinella variablis n. sp. Dockery 1982 clam
R category
 Poromyida - Cuspidariidae
Plectodon intastriata clam
R category
 Poromyida - Spheniopsidae
 Poromyida - Verticordiidae
Verticordia dalliana clam
C category
 Thraciida - Thraciidae
Thracia vicksburgensis clam
R category
 Cardiida - Sportellidae
Sportella oblonga Conrad 1848 clam
R category
 Cardiida - Veneridae
Pitar megacostata n. sp. venus clam
R category
Pitar calcanea venus clam
R category
Pitar aldrichi n. sp. venus clam
R category
"Chione victoria" = Lirophora (Lirophora) victoria Dall 1982 venus clam
R category
Callista sobrina venus clam
R category
Callista goniopisthus n. sp. venus clam
R category
 Cardiida - Chamidae
"Chama mississippiensis" = Chama (Psilopus) mississippiensis
"Chama mississippiensis" = Chama (Psilopus) mississippiensis Conrad 1848 jewel box
R category
 Cardiida - Kelliellidae
Kelliella rufaripa n. sp. clam
R category
 Cardiida - Ungulinidae
"Diplodonta eburnea" = Diplodonta (Diplodonta) eburnea
"Diplodonta eburnea" = Diplodonta (Diplodonta) eburnea Conrad 1848 clam
R category
 Cardiida - Tellinidae
Tellina subprotexta n. sp. tellin clam
C category
 Cardiida - Donacidae
Donax funerata Conrad 1848 clam
R category
 Cardiida - Solecurtidae
Solecurtus vicksburgensis Aldrich 1885 clam
R category
 Cardiida - Semelidae
Ervilia exterolaevis n. sp. clam
R category
Semelina pilsbryi clam
R category
Semele staminea clam
R category
 Cardiida - Cardiidae
Trigoniocardia silvacollina n. sp. Dockery 1982 cockle
R category
"Nemocardium diversum" = Nemocardium (Nemocardium) diversum Conrad 1848 cockle
R category
Agnocardia glebosum Conrad 1848 cockle
R category
Trachycardium eversum Conrad 1848 cockle
R category
 Pholadida - Corbulidae
Corbula engonata Conrad 1848 clam
C category
"Corbula laqueata" = Varicorbula laqueata Casey 1903 clam
C category
Tiza alta clam
R category
 Lucinida - Lucinidae
Myrtea vicksburgensis Casey 1903 clam
C category
Lucina triloba n. sp. Dockery 1982 clam
R category
Lucina imbricolamella n. sp. Dockery 1982 clam
R category
 Arcida - Glycymerididae
Glycymeris suwannensis Mansfield 1937 clam
R category
Glycymeris arctata Conrad 1848 clam
R category
 Arcida - Arcidae
Trinacria menthifontis n. sp. Dockery 1982 clam
R category
Scapharca delicatula Casey 1903 clam
R category
Barbatia paradiagona n. sp. Dockery 1982 clam
R category
 Pectinida - Pectinoidae
"Chlamys anatipes" = Anatipopecten anatipes, "Eburneopecten subminutus" = Eburneopecten (Eburneopecten) subminutus, "Pecten poulsoni" = Pecten (Pecten) poulsoni, "Chlamys menthifontis" = Chlamys (Lyropecten) menthifontis
"Chlamys anatipes" = Anatipopecten anatipes Morton 1833 scallop
R category
"Eburneopecten subminutus" = Eburneopecten (Eburneopecten) subminutus Aldrich 1903 scallop
C category
"Pecten poulsoni" = Pecten (Pecten) poulsoni Morton 1834 scallop
C category
"Chlamys menthifontis" = Chlamys (Lyropecten) menthifontis Glawe 1970 scallop
R category
 Ostreida - Ostreidae
Lopha vicksburgensis Conrad 1848 oyster
R category
Ostrea sp. Linnaeus 1758 oyster
R category
 Ostreida - Pinnidae
Atrina argentea Conrad 1848 oyster
R category
 Ostreida - Pteriidae
Pteria argentea Conrad 1848 pearl oyster
R category
 Mytilida - Crenellidae
Crenella fenestra n. sp. Dockery 1982 clam
R category
 Mytilida - Mytilidae
Brachidontes mississippiensis Conrad 1848 mussel
R category
 Nuculida - Nuculidae
Nucula vicksburgensis Conrad 1848 nut clam
R category
 Neotaenioglossa - Calyptraeidae
Calyptraea sp. Lamarck 1799 slipper shell
 Epitonioidea - Epitoniidae
Epitonium ? sp. Bolten 1798 wentletrap
 Sorbeoconcha - Vitrinellidae
 Sorbeoconcha - Triforidae
 Sorbeoconcha - Cerithiopsidae
Seila sp. Adams 1861 snail
 Sorbeoconcha - Ficidae
Ficus mississippiensis Conrad 1848 fig shell
 Neogastropoda - Drilliidae
 Neogastropoda - Cochlespiridae
"Tropiscurcula caseyi" = Tropisurcula, Cochlespira cookei n. sp.
"Tropiscurcula caseyi" = Tropisurcula snail
Cochlespira cookei n. sp. snail
 Neogastropoda - Borsoniidae
Bathytoma congesta snail
Bathytoma congesta fontis
 Neogastropoda - Mitridae
Mitra conquista mitre shell
 Neogastropoda - Olivellidae
"Oliva mississippiensis" = Agaronia mississippiensis
"Oliva mississippiensis" = Agaronia mississippiensis Conrad 1848 snail
 Neogastropoda - Costellariidae
Microsurcula mentha n. sp. ribbed mitre
 Neogastropoda - Volutidae
 Neogastropoda -
Spiradaphne lowei snail
Spiradaphne lowei refugium
 Neogastropoda - Cancellariidae
Agatrix mississippiensis, "Olssonella elongata n. sp." = Axelella
"Olssonella elongata n. sp." = Axelella snail
 Neogastropoda - Fasciolariidae
 Sorbeoconcha - Personidae
 Vanikoroidea - Aclididae
Aclis matsoni n. sp. aclis
 Heterostropha - Acteonidae
Acteon meyeri n. sp. snail
Acteon menthafons n. sp. snail
 Heterostropha - Ringiculidae
Ringicula mississippiensis Conrad 1848 snail
Ringicula mississippiensis petila
 Heterostropha - Pyramidellidae
Turbonilla leafensis n. sp. snail
 Heterostropha - Mathildidae
Mathilda regularis Meyer 1886 snail
 Trochoidea - Skeneidae
Solariorbis sp. Conrad 1865 snail
 Opisthobranchia - Haminoeidae
Atys pinguis n. sp., Atys caseyi n. sp.
Atys pinguis n. sp. snail
Atys caseyi n. sp. snail
 Thecosomata - Cavoliniidae
"Creseis hastata" = Creseis spina
"Creseis hastata" = Creseis spina Reuss 1867 snail
Merisca aequistriata
"Tellina lintea" = Merisca aequistriata
"Tellina lintea" = Merisca aequistriata Say 1824
R category